Re: NEC-LIST: NEC2 input file error

"James Bird" <hwh-james_at_optusnet.com.au> writes:
> Hi All,
>
> I'm trying to use NEC2 for the first time. I want to see the 3d magnetic
> field of a single square loop. My input file (loop.in) is as follows:
>
> CM My first go at an NEC input file. Single Square Loop.
> CE
> GW 1 4 -1 1 0 1 1 0 0.01
> GW 2 5 1 1 0 1 -1 0 0.01
> GW 3 4 1 -1 0 -1 -1 0 0.01
> GW 4 4 -1 -1 0 -1 1 0 0.01
> GE 0
> FR 0 1 0 0 1
> EX 0 2 3 0 1
> NH 1 5 5 5 0 0 0 0.25 72 72
> EN
>
> When I pass this file to the NEC core, I get the following error:
>
> fmt: end of file
> apparent state: unit 1 named loop.in
> last format: (a)
> lately reading sequential formatted external IO
> Aborted
>
> Anyone know what is wrong?
>
> Also, are there any GPL / freeware programs for automating the
> production of these input files?

Lots... Have you checked the NEC software repository at
www.qsl.net/wb6tpu/swindex.html

There are several programs there that either provide a "nice" front end to
NEC or that do such things as gridding, etc.

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